import numpy as np

# 示例数组
out = np.array([[1, 2, 3, 4, 5, 6],
                [7, 8, 9, 10, 11, 12],
                [13, 14, 15, 16, 17, 18],
                [19, 20, 21, 22, 23, 24],
                [25, 26, 27, 28, 29, 30],
                [31, 32, 33, 34, 35, 36]])

# 提取第五行
row_5 = out[np.newaxis, 1]
print(row_5)